I am a descendent of David Irvine and was wondering if you have found anything of interest since your posting last year? I am trying to discover the connection between David and Sophia and their story, especially since she was considered nobility of Scotland. I know the Irvine family worked for Lord Antrim and that could be their connection.
By the way, it was David and Sophia's great-great grandson who first came to America from Ireland and were the first settlers in an area of Virginia. I am curious to find out if you found the answer to your question or any leads that could help you.